Pigeons navigate using magnetic sensors in their livers(mpg.de)
mpg.de
Pigeons navigate using magnetic sensors in their livers
https://www.mpg.de/26511515/pigeons-navigate-using-magnetic-sensors-in-their-livers
https://www.mpg.de/26511515/pigeons-navigate-using-magnetic-sensors-in-their-livers
I would have prefered to see the comparison of pidgeons with vs without macrophages on cloudy days.
That might have required the removal of pidgeon's body parts, the liver?